Display Screen Assembly, Terminal Front Cover, and Terminal

ABSTRACT

A display screen assembly includes a display screen, a light guide plate, a touch panel, and a cover plate that are sequentially stacked. The display screen includes a display surface having a display region and a non-display region. The non-display region surrounds the display region. The light guide plate covers the non-display region correspondingly. The light guide plate has a light source disposed on an outer edge thereof and the light source is configured for illuminating the light guide plate. The touch panel covers the light guide plate; the touch panel has virtual keys provided thereon. The cover plate includes a light transmission window and a light shielding band surrounding the sides of the light transmission window. The light of the display region transmits through the light transmission window. The light shielding band includes a keypad region and a shielding region disposed around the keypad region.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a continuation of U.S. application Ser. No.15/495,510, filed on Apr. 24, 2017, which is a continuation-in-part ofInternational Application No. PCT/CN2016/086709, filed on Jun. 22, 2016,which claims priority to Chinese Patent Application No. 201510443131.1,filed on Jul. 24, 2015, the contents of all of which are hereinincorporated by reference in their entireties.

TECHNICAL FIELD

The present disclosure relates to the field of display screen, andparticularly to a display screen assembly, a terminal front cover, and aterminal.

BACKGROUND

The display screen assembly of a traditional mobile phone is composed ofa cover plate and a display screen. The cover plate is laminated on thedisplay screen. The inner surface of the cover plate is generallydivided into two parts, that is, an ink area and a display region. Theink area is formed by applying an ink layer on the inner surface of thecover plate. The ink layer is used to shield the area at the edge of thedisplay screen where images cannot be displayed, while the displayregion is an area where the cover plate can effectively display imagesof the display screen. Generally, the ink area does not display anyimages on the exterior surface of the cover plate, and therefore, theratio of the display region to the exterior surface of the cover platecannot be improved. It can be difficult to obtain a larger displayscreen and is not ergonomic.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a display screen assembly according to animplementation of the present disclosure.

FIG. 2 is a cross-sectional view of the display screen assemblyillustrated in FIG. 1.

FIG. 3 is a schematic view of a terminal front cover according to animplementation of the present disclosure.

FIG. 4 is a cross-sectional view of the terminal front cover accordingto an implementation of the present disclosure.

FIG. 5 is a cross-sectional view of a terminal according to animplementation of the present disclosure.

DETAILED DESCRIPTION

Hereinafter, implementations of the present disclosure are described indetail, examples of which are illustrated in the accompanying drawings,where the same or similar reference numerals refer to the same orsimilar elements or elements having the same or similar functionsthroughout the specification. The implementations described below withreference to the accompanying drawings are exemplary and are for thepurpose of explaining the present disclosure, and should not beconstrued as limiting the present disclosure.

In the description of the present disclosure, the orientation orpositional relationship indicated by the terms “center”, “up”, “down”,“front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”,“bottom”, “inside”, “outside” and the like, is based on the orientationor positional relationship illustrated in the drawings and merely forthe purpose of facilitating the description of the present disclosureand simplifying description, rather than indicating or implying that thedevice or element referred to must have a specific orientation orconstructed and operated in a particular orientation, and therefore,should not be construed as limiting the present disclosure.

It should be noted that, the terms “first”, “second” are used merely forthe purpose of description, and should not be interpreted as indicativeor suggestive of the relative importance or implied quantity of thetechnical characteristics indicated. Thus, the characteristics definedby the terms “first” and “second” can include one or more of thefeatures, either explicitly or implicitly. Further, in the descriptionof the present disclosure, unless otherwise stated, “multiple” means twoor more than two.

According to an implementation of the present disclosure, there isprovided a display screen assembly. The display screen assembly includesa display screen, a light guide plate, a touch panel, and a cover platethat are sequentially stacked. The display screen includes a displaysurface having a display region and a non-display region. Thenon-display region surrounds the display region. The light guide platecovers the non-display region correspondingly. The light guide plate hasa light source disposed on an outer edge thereof and the light source isconfigured for illuminating the light guide plate. The touch panelcovers the light guide plate. The touch panel has virtual keys providedthereon. The cover plate comprises a light transmission window and alight shielding band surrounding the circumference of the lighttransmission window, where the light of the display region is configuredto transmit through the light transmission window. The light shieldingband comprises a keypad region and a shielding region disposed aroundthe keypad region. The light of the light guide plate transmits throughthe keypad region. The keypad region is disposed corresponding to thevirtual keys of the touch panel. The shielding region is configured toobscure the light of the light guide plate.

As one implementation, the cover plate includes an inner surfaceadjacent to the touch panel. The inner surface has an ink layer disposedthereon at a location corresponding to the shielding region of the lightshielding band.

As one implementation, the keypad region is provided with key patterncodes which identify the virtual keys.

As one implementation, the light guide plate and the display screen havean optical adhesive layer disposed there-between.

As one implementation, the display screen assembly further comprises astrip-shaped light source drive board adjacent to an outer edge of thelight guide plate. The light source includes a plurality of LED lampbeads disposed on the light source drive board and arranged along thelongitudinal direction of the light guide plate, the LED lamp beads areconfigured to emit light toward the light guide plate.

As one implementation, the cover plate includes an outer surfaceprovided opposite the inner surface, and the edge of the outer surfaceis curved in a circular arc.

According to an implementation of the present disclosure, there isprovided a front cover for a terminal. The front cover includes thedisplay screen assembly of any of the foregoing implementation, andfurther comprising a frame fixed on a peripheral edge of the coverplate.

As one implementation, the cover plate and the frame are integrallymolded.

As one implementation, an inner side of the frame is provided with agroove, the groove is configured to accommodate the light source.

According to another implementation of the present disclosure, there isprovided a terminal. The terminal includes the front cover of any of theforegoing implementations and further includes a rear cover and acontrol assembly. The rear cover is provided with a receiving chamber,the receiving chamber has an open end situated on an outer surface ofthe rear cover, the front cover covers the open end, the display screenand the control assembly are received in the receiving chamber, and thecontrol assembly is electrically coupled to the display screen tocontrol the display screen.

Implementations of the present disclosure will be described in detail.In the following, the same reference numerals are used to refer to thesame or similar elements throughout the specification.

A display screen assembly 100 according to an implementation of thefirst aspect will be described with reference to FIG. 1 and FIG. 2.

As illustrated in FIG. 1, the display screen assembly 100 according tothe implementation of the first aspect includes a display screen 10(specifically, a display panel), a lighting assembly such as a lightguide plate 20 and/or additional components thereof (a light source forexample), the touch panel 30, and a cover plate 40. As anotherimplementation, the lighting assembly can also be an annular LED array.

As illustrated in FIG. 1 and FIG. 2, the display screen 10, the lightguide plate 20, the touch panel 30, and the cover plate 40 aresequentially stacked. The display screen 10 includes a display surface11. The display surface 11 has a display region 111 and a non-displayregion 112. The non-display region 112 surrounds the display region 111.The light guide plate 20 is arranged on one side (for example, the upperside of FIG. 1 and FIG. 2) of the display screen 10 that is adjacent tothe display surface 11. The light guide plate 20 covers the non-displayregion 112. The outer edge of the light guide plate 20 is provided witha light source 20 a. The light source 20 a is configured to illuminatethe light guide plate 20.

The display surface 11 is disposed on one side of the display screen 10that is adjacent to the light guide plate 20. The display region 111 isan area of the display screen 10 that can display image informationeffectively. The non-display region 112 is an area of the display screen10 that cannot display the image information effectively. Normally, thenon-display region 112 is used for circuit connection, or is providedwith a backlight lamp, or is used for packaging a liquid crystal layerof the display screen 10. The display screen 10 can be one of a LCD(Liquid Crystal Display) screen and a LCM (LCD Module) component. Thedisplay screen 10 can also be a widely used touch screen. For example,the display screen 10 can be an in-cell touch screen in which a touchlayer is embedded into liquid crystal pixels. The display screen 10 canbe an on-cell touch screen in which the touch layer is arranged on theliquid crystal pixels. The display screen 10 can also be a full-fittouch screen in which the touch layer is fully attached to the coverplate.

The touch panel 30 is disposed on one side (for example, the upper sideof FIG. 1 and FIG. 2) of the light guide plate 20 that is remote fromthe display screen 10. The touch panel 30 covers the light guide plate20. The touch panel 30 is provided with at least one virtual key (notillustrated in the figures). For ease of explanation, in the following,take one virtual key as an example for description.

The cover plate 40 is provided on one side of the touch panel 30 that isremote from the light guide plate 20. The cover plate 40 includes alight transmitting portion 41 (can be referred to as a lighttransmission window) and a light shielding band 42 enclosing theperiphery of the light transmitting portion 41 (that is, surrounding thelight transmitting portion 41). The light emitted from the light source20 a are adapted to pass through the light guide plate 20, a keypadregion 421, and the light transmitting portion 41.

The keypad region 421 is configured to be illuminated by the light ofthe lighting assembly such as the light guide plate, more specifically,the light source 20 a. The light transmitting portion 41 passes throughthe light of the display region 111 correspondingly. The light shieldingband 42 includes the keypad region 421 and areas other than the keypadregion 421. The areas other than the keypad region 421 can be providedaround the keypad region 421 and can be referred to as a shieldingregion 422. The keypad region 421 can be illuminated by the light of thelight guide plate 20 and pass through the light of the light guide plate20. The keypad region 421 can be disposed corresponding to the virtualkey of the touch panel 30 (that is, the keypad region 421 corresponds tothe virtual key). The shielding region 422 shields the light of thelight guide plate 20.

In the display screen assembly 100 according to the implementation ofthe present disclosure, the light guide plate 20 is configured to coverthe light guide plate 20 correspondingly, and the light source 20 a isconfigured to illuminate the light guide plate 20. Besides, the lightshielding band 42 is configured to include the keypad region 421 and theshielding region 422 provided around the keypad region 421. The keypadregion 421 is configured to pass through the light of the light guideplate 20 and is arranged corresponding to the virtual key of the touchpanel 30. The shielding region 422 is configured to shield the light ofthe light guide plate 20, such that the non-display region 112 of thedisplay screen 10 can be utilized and the space of the display screenassembly 100 used to arrange keys can be saved, and therefore, thedisplay region of the display screen assembly 100 can be enlargedeffectively and this is ergonomic. It is to be understood that thedisplay screen assembly 100 is applicable to a terminal device. Theterminal device can be one of a mobile phone, a notebook computer, atablet computer, an electronic reader, an electronic album, a displayand the like.

The light guide plate 20 has a first surface and a second surface whichare disposed opposite to each other. The first surface is adjacent tothe display screen 10 and the second surface is adjacent to the touchpanel 30. The first surface and the second surface can be formed asplanes parallel to each other, or, the second surface can be formed asan arc-shaped surface. For example, as illustrated in FIG. 1, the lightguide plate 20 is annular. The light guide plate 20 includes a bottomsurface 21 (i.e., the first surface) and a top surface 22 (i.e., thesecond surface) which are disposed opposite to each other. The lightguide plate 20 further includes an outer side surface 23 providedbetween the bottom surface 21 and the top surface 22. The bottom surface21 is correspondingly attached to the non-display region 112 of thedisplay surface 11. The top surface 22 is attached to the touch panel30. The outer side surface 23 corresponds to the edge of the displaysurface 11. The outer side surface 23 is configured to receive the lightof the light source 20 a, whereby the light guide plate 20 can beilluminated and the top surface 22 can emit light. The light emitted bythe top surface 22 can pass through the touch panel 30 as well as thekeypad region 421, thus making the keypad region 421 visible. In thisway, the keypad region 421 can identify the virtual key of the touchpanel 30, and the non-display region 112 of the display surface 11 canbe utilized to receive touch instructions. In this implementation, thetop surface 22 is parallel to the bottom surface 21, so that thethickness of the light guide plate 20 can be reduced. In otherimplementations, the top surface 22 may be an arc-shaped surface suchthat the light emitting area of the top surface 22 is larger and thearea of the keypad region 421 can be increased.

In this implementation, the touch panel 30 can be integrated into thecover plate 40, that is, the touch panel 30 is integrated with the coverplate 40, and in other words, the touch panel 30 is integrally formedwith the cover plate 40. The touch panel 30 covers the light guide plate20 correspondingly and covers the display region 111 of the displayscreen 10, such that the touch panel 30 corresponding to the non-displayregion 112 or the display region 111 can realize the input of touchinstructions. Multiple virtual keys can be provided. The multiplevirtual keys can implement input of multiple different key instructions.In other implementations, the touch panel 30 is annular; the touch panel30 correspondingly covers the light guide plate 20.

In this implementation, the cover plate 40 is made of glass. Thecross-section of the cover plate 40 is parallel to the display surface11 of the display screen 10. The cover plate 40 is a rectangular platemember. The cover plate 40 includes an outer surface 40 a and an innersurface 40 b which are disposed opposite to each other. The outersurface 40 a faces the user and is the exterior surface of the coverplate 40. The inner surface 40 b deviates from the user. The innersurface 40 b covers the light guide plate 20 and the display region 111correspondingly. The light transmitting portion 41 of the cover plate 40can enhance the light transmittance of the display screen 10 and canenhance the visual effect of the display screen assembly 100. The lightshielding band 42 shields the light guide plate 20; that is, the lightshielding band 42 covers the non-display region 112 of the displayscreen 10, thereby preventing (or limiting) the non-display region 112from affecting the visual effect. The cover plate 40 further includes anouter side wall 43 secured between the outer surface 40 a and the innersurface 40 b. The outer side wall 43 may be fixed to the housing of theterminal device. The cover plate 40 is a transparent hard plate member.The cover plate 40 has a good protective effect on the display screen 10and can achieve good light transmission.

Further, an ink layer 42 a is provided between the cover plate 40 andthe touch panel 30. The ink layer 42 a corresponds to the shieldingregion 422 of the light shielding band 42. As illustrated in FIG. 1 andFIG. 2, the cover plate 40 includes an inner surface 40 b close to thetouch panel 30. The inner surface 40 b is provided with the ink layer 42a corresponding to the shielding region 422 of the light shielding band42. As one implementation, the ink layer 42 a is printed on the innersurface 40 b by a screen printing technique. By virtue of the opacity ofthe ink layer 42 a, covering of the non-display region 112 can beachieved, and partial light of the light guide plate 20 is preventedfrom passing through. Normally, the ink layer 42 a is black; the inklayer 42 a causes the light shielding band 42 to be black. In othersituations, the ink layer 42 a may also use white ink.

Further, the keypad region 421 is provided with a key pattern code(s)(not illustrated). The key pattern code is configured to identify thevirtual key. As one implementation, the key pattern code is provided ina blank area of the ink layers 42 a. Multiple different key patterncodes may be provided for multiple keypad regions 421, and each keypattern code can be configured to represent a key with a differentfunction. When the light guide plate 20 is illuminated, the light of thelight guide plate 20 passes through the key pattern code, such that thekey pattern code glows and the pattern identified by the key patterncode can be seen on the exterior surface of the cover plate 40, and itis possible to identify a corresponding virtual key and use it torealize instruction input.

Further, an optical adhesive layer 20 b is provided between the lightguide plate 20 and the display screen 10. The light guide plate 20 isbonded to the display screen 10 via the optical adhesive layer 20 b; inone aspect, this enhances the stable structure of the display screenassembly 100, in another aspect, the light guide plate 20 is directlyattached to the display screen 10; therefore, the display screen 10 andthe light guide plate 20 are attached seamlessly, the display surface 11is free of dust and impurities, and the display effect of the displayscreen assembly 100 can be enhanced.

Further, the display screen assembly 100 further includes a light sourcedrive board 50 (for example, a strip-shaped light source drive board).The light source drive board 50 can be deemed as part of the lightingassembly. For instance, the light source drive board 50 is a stripelight source drive board. The light source drive board 50 is adjacent tothe outer edge of the light guide plate 20. The light source 20 aincludes multiple LED lamp beads (not illustrated in the figures). Themultiple LED lamp beads are provided on the light source drive board 50and are arranged along the longitudinal direction of the light guideplate 20. The multiple LED lamp beads are configured to emit lighttowards the light guide plate 20. Specifically, the light source driveboard 50 is provided with a drive circuit. When the display screenassembly 100 is applied to a terminal device, the light source driveboard 50 can be electrically connected with the control assembly andobtain a current signal via the control assembly so as to drive thelight source 20 a to emit light. In this implementation, the lightsource drive board 50 is adjacent to the outer side surface 23 of thelight guide plate 20. The multiple LED lamp beads are bonded to one sideof the light source drive board 50 that close to the light guide plate20. The light from the multiple LED lamp beads passes through the outerside surface 23 and is diffused through the light guide plate 20 so asto be emitted from the top surface 22. In other implementations, theedge of the light guide plate 20 may be exposed to the display surface11, and the light source drive board 50 is adjacent to the bottomsurface 21 that is exposed to the display screen 10. The light of thelight source 20 a passes through the bottom surface 21 and is emittedfrom the top surface 22.

Further, the edge of a surface on one side of the cover plate 40 thatremote from the touch panel 30 is arc-shaped. The cover plate 40includes an outer surface 40 a provided opposite to the inner surface 40b. The edge of the outer surface 40 a is curved in a circular arc. Asone implementation, the edge of the outer surface 40 a includes anarc-shaped surface 40 c curved in a circular arc. The front projectionarea of the arc-shaped surface 40 c at the inner surface 40 bcorresponds to the non-display region 112 of the display screen 10.Thus, by using the arc-shaped surface 40 c, the refraction angle of thelight passing through the cover plate 40 of the ink layer 42 a can bechanged, and it can be observed through the cover plate 40 that the inklayer 42 a is narrowing, such that the display surface 11 of the displayscreen assembly 100 is visually larger.

The present disclosure further provides a terminal front cover 200. FIG.3 is a schematic view of the terminal front cover 200 and FIG. 4 is across-sectional view of the terminal front cover 200. The terminal frontcover 200 includes a display screen assembly 100. The terminal frontcover 200 further includes a frame 60. The frame 60 is fixed to the edgeof the cover plate 40.

In this implementation, the frame 60 can be made of plastic. Thethickness of the frame 60 can be thinner so as not to affect theeffective display region of the display region 111 of the display screenassembly 100. The frame 60 can stabilize the display screen assembly100. When the display screen 10 is a touch display screen, the frame 60can also be a weak polar material. In addition to show good insulationeffect, the frame 60 can also play a role in the transmission offingerprint induced electric field. The frame 60 includes an inner sidesurface 61. The outer side wall 43 of the cover plate 40 is fixed to theinner side surface 61.

As an implementation, the cover plate 40 can be integrally formed withthe frame 60. As an implementation, a glass raw material member of thecover plate 40 is molded by press roll molding, and the cover plate 40is obtained by a cutting process. The cover plate 40 is placed in a moldcavity of an injection mold, and then an injection molding process iscarried out so that the frame 60 is integrally molded on the cover plate40, such that the outer side wall 43 is better fitted to the inner sidesurface 61. The outer surface 40 a of the cover plate 40 and theexterior surface of the frame 60 are in the same mold cavity, and theouter surface 40 a and the exterior surface of the frame 60 can form asmooth surface while the frame 60 and the cover plate 40 are more stablein structure. In other implementations, if the frame 60 is made of ametal material, it is also possible to place the cover plate 40 in amold cavity of a molding mold and inject liquid metal into the moldingmold so that the frame 60 is integrally formed with the cover plate 40.

Further, the inner side of the frame 60 is provided with a groove 62.The light source 20 a is configured to be accommodated in the groove 62.As one implementation, the groove 62 is arranged on an inner sidesurface 61. The light source drive board 50 and the light source 20 aare fixed in the groove 62. The side wall of the groove 62 prevents thelight of the light source 20 a from being irradiated toward the frame 60as well as the gap between the frame 60 and the cover plate 40, suchthat the groove 62 can prevent the light source 20 a from leaking andthereby improve the performance of the display screen assembly 100. Inthe present implementation, the light source drive board 50 is engagedwith the side wall of the groove 62. In other implementations, the lightsource drive board 50 may also be bonded to the side wall of the groove62.

In the present disclosure, according to another implementation, there isprovided a terminal 300. FIG. 5 is a cross-sectional view of theterminal 300 according to an implementation of the present disclosure.As illustrated in FIG. 5, the terminal 300 includes the terminal frontcover 200 as illustrated in FIG. 3 or FIG. 4. Further, as illustrated inFIG. 5, the terminal 300 further includes a rear cover 70 and a controlassembly 80. The rear cover 70 is provided with a receiving chamber 71,the open end of which is situated on the outer surface of the rear cover70. The terminal front cover 200 covers the open end, and the displayscreen 10 and the control assembly 80 are received in the receivingchamber 71. The control assembly 80 electrically connects the displayscreen 10 and the light source drive board 50 so as to control thedisplay screen 10 and the light source 20 a. It is to be understood thatthe terminal 300 is a terminal device, which may be one of a mobilephone, a notebook computer, a tablet computer, an electronic reader, anelectronic album, a display and the like.

Unless otherwise indicated, various features described in theimplementations of the present disclosure may be combined or replacedwith each other. For example, details of the elements described in theimplementations of the display screen assembly 100 can be equallyapplicable to the implementations of the terminal front cover 200 andthe terminal 300 of the present disclosure.

In the display screen assembly and the terminal, the light guide plateis configured to cover the non-display region correspondingly, and thelight source is used to illuminate the light guide plate. Besides, thelight shielding band is configured to include the keypad region and theshielding region disposed around the keypad region. The keypad region isconfigured to pass through the light of the light guide plate and isprovided corresponding to the virtual key of the touch panel. Theshielding region is configured to shield the light of the light guideplate. In this way, the non-display region of the display screen can beutilized and therefore the display region of the display screen assemblycan be increased effectively and is ergonomic.

In the description of the present disclosure, the term “oneimplementation”, “some implementations”, “illustrative implementation”,“example”, “specific example”, or “some example” and the like means thata particular feature, structure, material, or characteristic describedin connection with the implementation or example is included in at leastone implementation or example of the present disclosure. In the presentspecification, the schematic expression of the above-mentionedterminology does not necessarily refer to the same implementation orexample. Moreover, the particular feature, structure, material, orfeature described may be combined in any implementation or example inany suitable manner.

While the present disclosure has been described in detail above withreference to the example implementations, the scope of the presentdisclosure is not limited thereto. As will occur to those skilled in theart, the present disclosure is susceptible to various modifications andchanges without departing from the spirit and principle of the presentdisclosure. Therefore, the scope of the present disclosure should bedetermined by the scope of the claims.

What is claimed is:
 1. A display screen assembly, comprising a displayscreen, a light guide plate, a touch panel, and a cover plate that aresequentially stacked, wherein: the display screen comprises a displaysurface having a display region and a non-display region, thenon-display region surrounds the display region, wherein the light guideplate covers the non-display region correspondingly; the light guideplate has a light source disposed on an outer edge of the light guideplate and the light source is configured to illuminate the light guideplate; the touch panel covers the light guide plate, wherein the touchpanel is provided with virtual keys; and the cover plate comprises alight transmission window and a light shielding band surrounding thecircumference of the light transmission window, wherein the light of thedisplay region is configured to transmit through the light transmissionwindow, the light shielding band comprises a keypad region and ashielding region disposed around the keypad region, the light of thelight guide plate is configured to transmit through the keypad region,the keypad region is disposed corresponding to the virtual keys, theshielding region is configured to obscure the light of the light guideplate.
 2. The display screen assembly of claim 1, wherein the coverplate comprises an inner surface adjacent to the touch panel, and theinner surface has an ink layer disposed at a location corresponding tothe shielding region of the light shielding band.
 3. The display screenassembly of claim 2, wherein the keypad region is provided with keypattern codes which identify the virtual keys.
 4. The display screenassembly of claim 3, wherein the light guide plate and the displayscreen are provided with an optical adhesive layer disposedthere-between.
 5. The display screen assembly of claim 1, wherein thedisplay screen assembly further comprises a strip-shaped light sourcedrive board adjacent to the outer edge of the light guide plate, thelight source comprises a plurality of LED lamp beads disposed on thestrip-shaped light source drive board and arranged along a longitudinaldirection of the light guide plate, and the LED lamp beads areconfigured to emit light toward the light guide plate.
 6. The displayscreen assembly of claim 2, wherein the cover plate comprises an outersurface provided opposite to the inner surface, and an edge of the outersurface is curved in a circular arc.
 7. A front cover for a terminal,comprising the display screen assembly of claim 1 and a frame fixed on aperipheral edge of the cover plate.
 8. The front cover of claim 7,wherein the cover plate and the frame are integrally molded.
 9. Thefront cover of claim 7, wherein an inner side of the frame is providedwith a groove, and the groove is configured to accommodate the lightsource.
 10. The front cover of claim 7, wherein the cover platecomprises an inner surface adjacent to the touch panel, and the innersurface has an ink layer disposed at a location corresponding to theshielding region of the light shielding band.
 11. The front cover ofclaim 10, wherein the keypad region is provided with key pattern codeswhich identify the virtual keys.
 12. The front cover of claim 11,wherein the light guide plate and the display screen are provided withan optical adhesive layer disposed there-between.
 13. The front cover ofclaim 10, wherein the cover plate comprises an outer surface providedopposite to the inner surface, and an edge of the outer surface iscurved in a circular arc.
 14. The front cover of claim 7, wherein thedisplay screen assembly further comprises a strip-shaped light sourcedrive board adjacent to the outer edge of the light guide plate, thelight source comprises a plurality of LED lamp beads disposed on thestrip-shaped light source drive board and arranged along a longitudinaldirection of the light guide plate, and the LED lamp beads areconfigured to emit light toward the light guide plate.
 15. A terminal,comprising the front cover of claim 7, a rear cover, and a controlassembly, wherein the rear cover is provided with a receiving chamber,the receiving chamber has an open end situated on an outer surface ofthe rear cover, the front cover covers the open end, the display screenand the control assembly are received in the receiving chamber, and thecontrol assembly is electrically coupled to the display screen tocontrol the display screen.
 16. The terminal of claim 15, wherein thecover plate and the frame are integrally molded.
 17. The terminal ofclaim 15, wherein an inner side of the frame is provided with a groove,and the groove is configured to accommodate the light source.
 18. Theterminal of claim 15, wherein the cover plate comprises an inner surfaceadjacent to the touch panel, and the inner surface has an ink layerdisposed at a location corresponding to the shielding region of thelight shielding band.
 19. The terminal of claim 18, wherein the keypadregion is provided with key pattern codes which identify the virtualkeys.
 20. The terminal of claim 19, wherein the light guide plate andthe display screen is provided with an optical adhesive layer disposedthere-between.